/* ============================================
   LOADING SKELETON STYLES
   Visual feedback during data loading
   ============================================ */

.skeleton-container {
  padding: 20px 0;
}

.skeleton-card {
  background: var(--color-neutral-white);
  border: 1px solid var(--color-grey-900);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 24px;
}

/* Pulse Animation */
@keyframes skeleton-pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.4;
  }
}

.skeleton-pulse {
  animation: skeleton-pulse 1.5s ease-in-out infinite;
  background: linear-gradient(
    90deg,
    var(--color-grey-700) 0%,
    var(--color-grey-600) 50%,
    var(--color-grey-700) 100%
  );
  background-size: 200% 100%;
  border-radius: var(--radius-sm);
}

/* Executive Summary Skeleton */
.skeleton-executive-summary {
  padding: 32px;
}

.skeleton-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}

.skeleton-title {
  height: 32px;
  width: 300px;
  border-radius: var(--radius-sm);
}

.skeleton-badge {
  height: 32px;
  width: 120px;
  border-radius: var(--radius-lg);
}

.skeleton-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.skeleton-metric {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px;
  border: 1px solid var(--color-grey-900);
  border-radius: var(--radius-md);
}

.skeleton-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.skeleton-content {
  flex: 1;
}

.skeleton-label {
  height: 14px;
  width: 120px;
  margin-bottom: 12px;
  border-radius: var(--radius-sm);
}

.skeleton-value {
  height: 36px;
  width: 150px;
  border-radius: var(--radius-sm);
}

/* KPI Grid Skeleton */
.skeleton-kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.skeleton-kpi {
  padding: 24px;
}

.skeleton-kpi-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.skeleton-text {
  height: 16px;
  width: 140px;
  border-radius: var(--radius-sm);
}

.skeleton-badge-sm {
  height: 24px;
  width: 60px;
  border-radius: var(--radius-md);
}

.skeleton-text-sm {
  height: 14px;
  width: 180px;
  margin-top: 12px;
  border-radius: var(--radius-sm);
}

/* Chart Skeleton */
.skeleton-chart {
  padding: 24px;
}

.skeleton-chart-legend {
  display: flex;
  gap: 24px;
  margin-bottom: 20px;
}

.skeleton-legend-item {
  height: 16px;
  width: 100px;
  border-radius: var(--radius-sm);
}

.skeleton-chart-bars {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  height: 320px;
  padding: 20px 0;
}

.skeleton-bar {
  flex: 1;
  min-width: 20px;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.skeleton-bar:nth-child(1) { height: 45%; }
.skeleton-bar:nth-child(2) { height: 60%; }
.skeleton-bar:nth-child(3) { height: 55%; }
.skeleton-bar:nth-child(4) { height: 70%; }
.skeleton-bar:nth-child(5) { height: 65%; }
.skeleton-bar:nth-child(6) { height: 80%; }
.skeleton-bar:nth-child(7) { height: 75%; }
.skeleton-bar:nth-child(8) { height: 85%; }
.skeleton-bar:nth-child(9) { height: 80%; }
.skeleton-bar:nth-child(10) { height: 90%; }
.skeleton-bar:nth-child(11) { height: 85%; }
.skeleton-bar:nth-child(12) { height: 95%; }

/* Table Skeleton */
.skeleton-table {
  width: 100%;
}

.skeleton-table-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  padding: 16px;
  border-bottom: 1px solid var(--color-grey-900);
}

.skeleton-table-row:first-child {
  border-top: none;
}

.skeleton-table-cell {
  height: 20px;
  border-radius: var(--radius-sm);
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .skeleton-metrics {
    grid-template-columns: 1fr;
  }
  
  .skeleton-kpi-grid {
    grid-template-columns: 1fr;
  }
  
  .skeleton-title {
    width: 200px;
  }
  
  .skeleton-chart-bars {
    height: 220px;
    gap: 4px;
  }
  
  .skeleton-table-row {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  .skeleton-pulse {
    animation: none;
    opacity: 0.6;
  }
}

/* Loading Screen — shared across all pages */
#loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-grey-600);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  font-family: 'Inter', system-ui, sans-serif;
}

#loading-screen.hidden {
  display: none;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-grey-800);
  border-top: 3px solid var(--color-information-500);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.loading-text {
  margin-top: var(--space-4);
  color: var(--color-text-700);
  font-size: 14px;
}